Boat wake effects on sediment transport in intertidal waterways
نویسندگان
چکیده
Boat traffic and resulting wakes are among the major human-mediated stressors on coastal ecosystems. Modulation of sediment transport by tides in an intertidal waterway with boat is studied here. The hypothesis that cause significant increases settings tested. Field observations tides, currents, turbidity were collected a transect within Atlantic Intracoastal Waterway Northeast Florida, USA. Hydrodynamic processes evaluated analyzing this field data set. A daily average 60 wake events varying energies identified using time-frequency analysis methods. Due to differences suspension response each unpredictable evolution bed state, decomposition effects individual not possible. Therefore, dynamics during periods activity compared their entirety inactivity. Throughout experiment, all had consistently greater suspended concentration near preceding succeeding In first eight days experiment where tidal forcing was relatively similar between inactivity periods, rates estimated as 0.048 m3/m/hr 0.043 inactivity, respectively, indicating 12% increase due traffic. larger occurred over last three experiment. Volumes transported low-tide, mid-tide high-tide than counterparts results confirm earlier mentioned hypothesis.
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ژورنال
عنوان ژورنال: Continental Shelf Research
سال: 2021
ISSN: ['1873-6955', '0278-4343']
DOI: https://doi.org/10.1016/j.csr.2021.104422